public class ArrayDemo {
    public static void main(String[] args) {
        int[] a1 = new int[10];
        String[] a2 = new String[10];
        int[][] a3 = new int[10][10];
        int x = a1.length;
        a1[1] = 111;
        int y = a1[0];
        a2[0] = "0000xx2";
        String s = a2[0];
    }
}
